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Article Dans Une Revue International Journal of Heat and Mass Transfer Année : 2023

Effect of clay content on the thermal conductivity of unfrozen and frozen sandy soils

Quoc Hung Vu
  • Fonction : Auteur
Jean-Michel Pereira
Anh Minh Tang

Résumé

Thermal conductivities of five sandy soils subjected to freezing-thawing and drying-wetting cycles were determined. Specimens were prepared at five different clay contents of 0, 5, 10, 15, 20% prior to compaction at the Proctor maximum dry density. Soil specimens were saturated prior to freezing-thawing and drying-wetting experiments. During a freezing-thawing cycle, soil's thermal conductivity and unfrozen water content were measured at different temperatures ranging from-3 °C to 0 °C. During a drying-wetting cycle, soil's thermal conductivity was measured at different water contents. The experimental results were then compared with predictions by two of the most appropriate existing models, namely De Vries's and Johansen's models, in order to provide insights into the effects of clay content on soil thermal conductivity at (saturated and unsaturated) unfrozen and frozen states.
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Dates et versions

hal-04375028 , version 1 (05-01-2024)

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Quoc Hung Vu, Jean-Michel Pereira, Anh Minh Tang. Effect of clay content on the thermal conductivity of unfrozen and frozen sandy soils. International Journal of Heat and Mass Transfer, 2023, 206, pp.123923. ⟨10.1016/j.ijheatmasstransfer.2023.123923⟩. ⟨hal-04375028⟩
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